Aston Martin chief Mike Krack admitted his team has "no plan B" in place if Sebastian Vettel leaves at the end of the season.
The German's current deal expires this year, and there have been some suggestions that he may choose to retire. Vettel suggested as much himself recently when he questioned if his goals in Formula 1 are still "realistic".
Even if he decides to continue racing, there is no guarantee the 35-year-old will stay with Aston Martin. The team has struggled for performance ever since his arrival at the start of 2021, and the four-time world champion has been growing ever more frustrated over the situation.
